horned violet

Horned violet (Viola cornuta 'Blackout') requires evenly moist soil. Water thoroughly when the soil gets slightly dry, then allow the soil to dry slightly before watering again. During hot, dry periods, water more often. Horned violet is prone to root rot, so it’s important to make sure the soil doesn’t stay soggy for too long. Check the soil moisture weekly and water as necessary. If the leaves start to droop or turn yellow, this could be a sign of dehydration and you should increase watering.

Horned violets prefer to be in full sun but can still thrive in partial shade. When grown in full sun, horned violets benefit from 4 to 6 hours of direct sunlight every day. When grown in partial shade, they require 6 to 8 hours of indirect sunlight a day. They will either need morning or afternoon sun; it is not necessary to spread out the hours of sunlight. Horned violets can tolerant cold temperatures, but should be protected from strong winds and intense midday sun.

horned violet (Viola cornuta 'Blackout') should be pruned in late spring or early summer to encourage new growth and to promote flowering. Pruning should be done lightly, removing only dead or excess stems and thinning out long, spindly stems. Deadheading (removing spent flowers) will also help promote flowering later in the season. Pruning can be done again lightly in the summer, if needed.